SAT Biology Molecular (M) Sample Paper

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SAT Biology (Molecular) → Sample paper questions from 41 to 50

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41. __________ refers to one gene affecting many traits.
(A) Polygenesis
(B) Pleiotropy
(C) Linkage
(D) Epistasis
(E) Nondisjunction

42. Which of the following blood types are possible if the parents are A and O blood types?
(A) A and O
(B) B and O
(C) AB only
(D) O only
(E) A, B, and O

43. The portion of the DNA molecule that can vary is its
(A) sugar
(B) base
(C) deoxyribose
(D) ribose
(E) phosphate

44. An mRNA is 429 nucleotides long. The number of amino acids in the polypeptide chain formed from this mRNA is
(A) 143
(B) 142
(C) 141
(D) 429
(E) 428

45. Which of the following is NOT consistent with Griffith’s experiments?
(A) injected mixture of R-strain and live S-strain: mouse dies
(B) injected S-strain: mouse dies
(C) injected heat-killed S-strain: mouse lives
(D) injected R-strain: mouse lives
(E) injected mixture of heat-killed S-strain and live R-strain: mouse lives

46. Which of the following is a semi-conservative process?
(A) DNA replication
(B) non-disjunction
(C) translation
(D) transcription
(E) crossing over

47. Which of the following is true about enzymes?
(A) They always work alone
(B) They are consumed in a reaction
(C) They are amino acid polymers
(D) They always require a coenzyme
(E) They are classified as inorganic catalysts

48. Which of the following has a vitamin as a building block?
(A) apoenzyme
(B) alloenzyme
(C) metallic ion
(D) lipoprotein
(E) coenzyme

49. Which enzyme would the microbes in the gut of a termite need to have in order to metabolize the cell walls of the wood that termites eat?
(A) cellulase
(B) esterase
(C) protease
(D) pepsin
(E) trypsin

50. The reds, oranges, and yellows of the leaves of deciduous trees that become evident in the fall are from
(A) carotenoids
(B) ATP
(C) leaf decay
(D) chlorophylls
(E) overabundance of water

ANSWERS: SAT BIOLOGY MOLECULAR (M) SAMPLE PAPER
41. B
42. A
43. B
44. B
45. E
46. A
47. C
48. E
49. A
50. A